The Alpha Centuri star looks yellow-white because it has the same spectral type of G2 as the sun. Alpha Centauri A also looks yellow-white because it is much hotter than Alpha Centauri B, which is yellow-orange.
Answer:
Wood
Explanation:
Wood because the heat would not be able to travel to the hand to burn it unlike the metal
I think it’s C is the answer
I hope it helps you
Answer:
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Answer:
Energy produced by the chip =10,460 Joules.
Explanation:
The specific heat of water is one calorie/gram ° C = 4.186 joules/gram ° C, which is higher than any other common substance. As a result, water plays a very important role in regulating temperature. The specific heat per gram for water is much greater than that of a metal, as described in the water-metal example. Replace the mass (m), the temperature change (ΔT), and the specific heat (c) of the solution in the equation Q = c x m x ΔT, where Q is the heat absorbed by the solution. For specific heat of water we goes as given in the question 4,184 J/kg°C
Q =4184×0.5×(25-20)
=10,460 Joules.
Thus heat gained by water (Q)= Energy produced by the chip =10,460 Joules.
